// Protocol Buffers for GWT
// Copyright 2010 Thomas Broyer  All rights reserved.
// http://code.google.com/p/protobuf-gwt/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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package net.ltgt.gwt.protobuf.compiler.client;

import com.google.protobuf.Descriptors.FieldDescriptor;

import java.io.IOException;
import java.io.Writer;

/**
 * @author t.broyer@ltgt.net Thomas Broyer
 * Based on the initial work of:
 * @author kenton@google.com Kenton Varda
 * Based on original Protocol Buffers design by
 * Sanjay Ghemawat, Jeff Dean, and others.
 */
public abstract class SingularFieldGenerator extends FieldGenerator {

  protected SingularFieldGenerator(FieldDescriptor descriptor, String typeName) {
    super(descriptor, typeName);
  }

  protected SingularFieldGenerator(FieldDescriptor descriptor, String typeName,
      String boxedTypeName) {
    super(descriptor, typeName, boxedTypeName);
  }

  @Override
  public void generateMergingCode(Writer output) throws IOException {
    output.write("if (other.has" + capitalizedName + "()) {\n");
    output.write("  set" + capitalizedName + "(other." + name + "_);\n");
    output.write("}\n");
  }
  
  @Override
  public void generateBuildingCode(Writer output) throws IOException { }

  @Override
  public final void generateAddRepeatedFieldCode(Writer output) {
  }
  
  @Override
  public void generateGetFieldCode(Writer output) throws IOException {
    output.write("case " + descriptor.getNumber() + ":\n");
    output.write("  return get" + capitalizedName + "();\n");
  }
  
  @Override
  public final void generateGetRepeatedCountFieldCode(Writer output) {
  }
  
  @Override
  public final void generateGetRepeatedFieldCode(Writer output) {
  }
  
  @Override
  public void generateHasFieldCode(Writer output) throws IOException {
    output.write("case " + descriptor.getNumber() + ":\n");
    output.write("  return has" + capitalizedName + "();\n");
  }
  
  @Override
  public void generateSetFieldCode(Writer output) throws IOException {
    output.write("case " + descriptor.getNumber() + ":\n");
    output.write("  set" + capitalizedName + "((" + boxedTypeName + ") value);\n");
    output.write("  break;\n");
  }
  
  @Override
  public final void generateSetRepeatedFieldCode(Writer output) {
  }
}